<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body {
      padding: 0;
      margin: 0;
    }
    .box {
      height: 489px;
      background-color: #f00;
      overflow: hidden;
    }

    .box .img {
      width: 1920px;
      height: 489px;
      background-color: aqua;
      position: relative;
      transform: translate(-50%);
      margin-left: 50%;
    }
    .fbox > .fspan{
      color: rebeccapurple;
      position: fixed;
      right: 30px;
      top: 100px;
    }
    .continer{
      /* width: 1000px; */
      height: 500px;
      border: solid green;
      position: relative;
    }
    .juedui {
      height: 300px;
      border: 1px solid red;
      width: 500px;
      position: absolute;
      right: 0px;
      bottom: 0px;
    }
    .juedui > strong {
      color: red;
      position: absolute;
      left: 0px;
      bottom: 0px;
      
    }
  </style>
</head>
<body>

  <div class="box">
    <div class="img"></div>
  </div>

  <div class="fbox">
    1231231 <span class="fspan">4444</span>2334534543
  </div>
  <div class="continer">
    <div class="juedui">
      <strong>我是strong元素</strong>
    </div>
  </div>
 
  
</body>
</html>